An axisymmetric finite element model of a restored lower molar was used to examine the effect of interface parameter changes on the stresses within the restored tooth. The resulting principal and equivalent stresses and displacements were evaluated and plotted throughout the model. It was found that changes in amalgam-tooth interface parameters resulted in noticeable changes in the stress distribution.
Get full access to this article
View all access options for this article.
References
1.
Brekelmans, W.A.M. and Poort, H.W.: Theoretical and Experimental Investigation of the Stress and Strain Situation on a Femur, Acta Orthop Belg Suppl1 :3-24, 1973.
2.
Farah, J.W.; Craig, R.G.; and Sikarskie, D.L.: Photo-elastic and Finite Element Stress Analysis of a Restored Axisymmetric First Molar, J Biomech6:511-520, 1973.
3.
Peters, M.C.R.B. : Biomechanics of Cavity Preparation and Restoration of Human Teeth; Modeling and Analysis with the Finite Element Method. Ph.D. dissertation, University of Nijmegen, The Netherlands, 1981, p. 304.
4.
Zienkiewicz, O.C.: The Finite Element Method, 3rd ed., London: McGraw-Hill , 1977, p. 787.
5.
Craig, R.G. and Farah, J.W.: Stress Analysis and Design of Single Restorations and Fixed Bridges , Oral Sci Rev10 :45-74,1977.
6.
Dérand, T.: Creep in Amalgam Class V Restorations, Odont Rev27:181-186, 1976.
7.
Dérand, T.: Marginal Failure of Amalgam Class II Restoration, J Dent Res56:481-485, 1977.
8.
Wright, K.W.J. and Yettram, A.L.: Finite Element Stress Analysis of a Class I Amalgam Restoration Subjected to Setting and Thermal Expansion , J Dent Res57:715-723, 1978.
9.
Farah, J.W.; Hood, J.A.A.; and Craig, R.G.: Stresses and Deflections in the Floor of Model Cavity Preparations , J Oral Rehabil1:207-215, 1974.
10.
Farah, J.W.; Hood, J.A.A.; and Craig, R.G.: Effects of Cement Bases on the Stresses in Amalgam Restorations, J Dent Res54:10-15, 1975.
11.
Kraus, B.S.; Jordan, R.E.; and Abrams, L.: Dental Anatomy and Occlusion, 7th ed., Vol. I, Baltimore: Williams and Wilkins Co., 1969, pp. 74-115.
12.
Peters, F.J. and Banens, J.P.A.: FEMSYS; Calculation System Based on Finite Element Analysis, Intern. Report , Technological University, Eindhoven , 1976, p. 69.
13.
Timoshenko, S. and Young, D.H.: Elements of Strength of Materials, 5th ed., New York: Van Nostrand-Reinhold Co., 1968, p. 377.
